... from light,airlock QS, SGS approved material Customized accept heat sealed foil plastic packing facial mask bags Key specification/ Special FeatureMaterial ... Material PET , BOPP , CPP , LDPE ,VMPET , VMCPP , Aluminum foil , Papertwo-layercomposites:PET/CPP,PET/PE,BOPP/CPP,BOPP/PE ... PE,BOPP/VNPET/CPP, PET/ Aluminum foil/LDPE,BOPP/ Aluminum foil/CPP, BOPP/ Aluminum foil/LDPE PET/VNPET/CPP,BOPP/VMPET/PE ...